Question

how is concave convex and plane mirrors formed

Answer 1

The object in the image formedby the convex mirror look smaller than the original size of the object. Concave mirrors formreal and inverted images except when the object is between pole and focus. Convex mirrors formvirtual and erect images irrespecive of the position of the object.

Answer 2

Formation of plane mirrors :

Plane mirrors are made up of glass plate, a few mm thick.
One surface of the glass plate is polished to a high degree of smoothness forming the front surface of the mirror.

The back is silvered, and a plane mirror is formed.

Formation of concave mirror, convex mirror or spherical mirrors :

Spherical mirror are special types of curved mirrors in which the surface of the mirror is a part of the sphere.

It can be thought of as being made from a portion cut off from a glass sphere.

It has two dissimilar surfaces. The surface that are on the same side of the center of original sphere is called concave surface.


The surface that on opposite side of the centre of original sphere is called convex surface.